#exam6.4.py  文本字符分析
words = input("请输入字符:")
words = list(words)
counts = {}
for word in words:
    counts[word] = counts.get(word,0) + 1
items = list(counts.items())
items.sort(key= lambda x:x[1],reverse=True)
for i in range(len(items)-1):
    word,count = items[i]
    print("{0:<10}{1:>5}".format(word,count))